Question

我想创建一个Android应用程序，捕获并上传图像到服务器，我的代码工作正常，即我可以捕获图像并使用http post方法将其提交到服务器。

但问题是......在我的服务器中，它只获得低质量的图像，实际图像几乎是500-900Kb。但上传的尺寸仅为5-10kb

应用程序中的

-preview也显示低质量图像。我不想压缩或调整大小。我需要服务器上的实际尺寸图像

 @Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.btnCamera:

            Intent cameraintent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cameraintent, 101);
            break;
        case R.id.btnSubmit:
            if (cd.isConnectingToInternet()) {
                if (!upflag) {
                    Toast.makeText(ImageActivity.this, "Image Not Captured..!", Toast.LENGTH_LONG).show();
                } else {
                    saveFile(bitmapRotate, file);
                }
            } else {
                Toast.makeText(ImageActivity.this, "No Internet Connection !", Toast.LENGTH_LONG).show();
            }
            break;
    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    try {
        switch (requestCode) {
            case 101:
                if (resultCode == Activity.RESULT_OK) {
                    if (data != null) {
                        selectedImage = data.getData(); // the uri of the image taken
                        if (String.valueOf((Bitmap) data.getExtras().get("data")).equals("null")) {
                            bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImage);
                        } else {
                            bitmap = (Bitmap) data.getExtras().get("data");
                        }
                        if (Float.valueOf(getImageOrientation()) >= 0) {
                            bitmapRotate = rotateImage(bitmap, Float.valueOf(getImageOrientation()));
                        } else {
                            bitmapRotate = bitmap;
                            bitmap.recycle();
                        }

                        ivImage.setVisibility(View.VISIBLE);
                        ivImage.setImageBitmap(bitmapRotate);

// Saving image to mobile internal memory for sometime
                        String root = getApplicationContext().getFilesDir().toString();
                        File myDir = new File(root + "/androidlift");
                        myDir.mkdirs();

                        Random generator = new Random();
                        int n = 10000;
                        n = generator.nextInt(n);

//Give the file name that u want
                        fname = "sg" + n + ".jpg";

                        imagepath = root + "/androidlift/" + fname;
                        file = new File(myDir, fname);
                        upflag = true;
                    }
                }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    super.onActivityResult(requestCode, resultCode, data);
}

public static Bitmap rotateImage(Bitmap source, float angle) {
    Bitmap retVal;

    Matrix matrix = new Matrix();
    matrix.postRotate(angle);
    retVal = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);

    return retVal;
}

//    In some mobiles image will get rotate so to correting that this code will help us
private int getImageOrientation() {
    final String[] imageColumns = {MediaStore.Images.Media._ID, MediaStore.Images.ImageColumns.ORIENTATION};
    final String imageOrderBy = MediaStore.Images.Media._ID + " DESC";
    Cursor cursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,imageColumns, null, null, imageOrderBy);

    if (cursor.moveToFirst()) {
        int orientation = cursor.getInt(cursor.getColumnIndex(MediaStore.Images.ImageColumns.ORIENTATION));
        System.out.println("orientation===" + orientation);
        cursor.close();
        return orientation;
    } else {
        return 0;
    }
}

//    Saving file to the mobile internal memory
private void saveFile(Bitmap sourceUri, File destination) {
    if (destination.exists()) destination.delete();
    try {

        FileOutputStream out = new FileOutputStream(destination);
        sourceUri.compress(Bitmap.CompressFormat.JPEG, 100, out);
        out.flush();
        out.close();
        if (cd.isConnectingToInternet()) {
            new DoFileUpload().execute();
        } else {
            Toast.makeText(ImageActivity.this, "No Internet Connection..", Toast.LENGTH_LONG).show();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

class DoFileUpload extends AsyncTask<String, String, String> {

    @Override
    protected void onPreExecute() {

        pDialog = new ProgressDialog(ImageActivity.this);
        pDialog.setMessage("wait uploading Image..");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(true);
        pDialog.show();
    }

    @Override
    protected String doInBackground(String... params) {

        try {
            // Set your file path here
            FileInputStream fstrm = new FileInputStream(imagepath);
            // Set your server page url (and the file title/description)
            HttpFileUpload hfu = new HttpFileUpload("http://www.example.com/test/save.php", "ftitle", "fdescription", fname);
            upflag = hfu.Send_Now(fstrm);
        } catch (FileNotFoundException e) {
            // Error: File not found
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(String file_url) {
        if (pDialog.isShowing()) {
            pDialog.dismiss();
        }
        if (upflag) {
            Toast.makeText(getApplicationContext(), "Uploading Complete", Toast.LENGTH_LONG).show();

此外，我的php脚本中没有图像压缩或调整大小

Answer 1

密钥＆＃34;数据＆＃34;下的附加内容中的位图仅包含图片的缩略图。

阅读这篇文章：https://developer.android.com/training/camera/photobasics.html#TaskPath

Android Capture和上传仅获得低质量图片

1 个答案: